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<p class=MsoNormal><span style='color:#1F497D'>Thanks Mark that helps!<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;color:navy'>Sincerely,<br>
<br>
Chris Worcester<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:navy'>Solar Wind Works<br>
NABCEP Certified PV Installer<br>
Phone: 530-582-4503<br>
Fax: 530-582-4603<br>
<a href="http://www.solarwindworks.com/">www.solarwindworks.com</a><br>
<a href="mailto:chris@solarwindworks.com">chris@solarwindworks.com</a><br>
"Proven Energy Solutions"</span><span style='color:#1F497D'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> re-wrenches-bounces@lists.re-wrenches.org
[mailto:re-wrenches-bounces@lists.re-wrenches.org] <b>On Behalf Of </b>Mark
Frye<br>
<b>Sent:</b> Friday, November 13, 2009 7:22 AM<br>
<b>To:</b> 'RE-wrenches'<br>
<b>Subject:</b> Re: [RE-wrenches] Grounding detached buildings<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'>Try 250.32. In this case, you consider that the panels at the home
are not actually new "service enterance" equipment. The
"service" is up at the shed and the home is part of two or more
buildings supplied from a common service.</span><span style='font-size:12.0pt;
font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Mark
Frye</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>
<br>
</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Berkeley
Solar Electric Systems</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>
<br>
</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>303
Redbud Way</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>
<br>
</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Nevada
City, CA 95959</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>
<br>
</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>(530)
401-8024</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>
<br>
<a href="http://www.berkeleysolar.com/"><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'>www.berkeleysolar.com</span></a></span><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'> <o:p></o:p></span></p>
<div>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'> <o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p> </o:p></span></p>
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style='font-size:12.0pt;font-family:"Times New Roman","serif"'>
<hr size=2 width="100%" align=center>
</span></div>
<p class=MsoNormal style='margin-bottom:12.0pt'><b><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> re-wrenches-bounces@lists.re-wrenches.org
[mailto:re-wrenches-bounces@lists.re-wrenches.org] <b>On Behalf Of </b>Chris
Worcester<br>
<b>Sent:</b> Friday, November 13, 2009 7:06 AM<br>
<b>To:</b> 'RE-wrenches'<br>
<b>Subject:</b> [RE-wrenches] Grounding detached buildings</span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
<p class=MsoNormal>Hi fellow wrenches,<o:p></o:p></p>
<p class=MsoNormal>We just inherited a two year old off grid system consisting
of a separate home and a big shop/garage that has a mechanical room and battery
room. The OBFW500 power center feeds a main/meter panel. The two Kohler
generators (25kW LPG & 60kW Diesel) feed a transfer switch that feeds
another meter/mains panel. <o:p></o:p></p>
<p class=MsoPlainText><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>1.
The previous electrician didn’t run any grounding to the home with the
two service feeds, where there are two separate AC load centers, A 200A main
panel and a 100A subpanel for the overflow. both fed from the inverter
meter/mains panel. We have installed the ground one. Now he is claiming <o:p></o:p></span></p>
<p class=MsoPlainText><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>“</span>code
requires separate grounds on detached buildings. 1. House and garage are not
bonded together , they again have <span style='font-size:11.0pt;
font-family:"Calibri","sans-serif"'><o:p></o:p></span></p>
<p class=MsoPlainText>separate ground-rods as required.”<o:p></o:p></p>
<p class=MsoPlainText><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>I
flat can’t find any reference to his statement in the code, and he
didn’t say where in the code he is referencing. I quoted NEC 250.50,
250.66 as my reason to correct the lack of grounding between buildings.<o:p></o:p></span></p>
<p class=MsoPlainText> Can anyone shed some light on this, thanks.<o:p></o:p></p>
<p class=MsoNormal>Elsewhere I am removing redundant neutral to ground bonds in
both the generators, the generator meter/main panel the home’s 200A main
panel, and leaving the one in the inverter meter/main as the one point of
bonding. We grounded the generator chassis too.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:navy'>Sincerely,<br>
<br>
Chris Worcester<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:navy'>Solar Wind Works<br>
NABCEP Certified PV Installer<br>
Phone: 530-582-4503<br>
Fax: 530-582-4603<br>
<a href="http://www.solarwindworks.com/">www.solarwindworks.com</a><br>
<a href="mailto:chris@solarwindworks.com">chris@solarwindworks.com</a><br>
"Proven Energy Solutions"</span><o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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